Demonstration kit for mechanical dentistry



N v ,194s. E. KELLERMAN Em 2,3 7 5 DEMONSTRATION KIT FOR MECHANICAL DENTISTRY Filed Dec. 23. 1941 2 Sheets-sheet 1 INVENTORS ERNEST KELLLRMAN MAX 0. DUK/LS Nov. 9, 1943. I E. KELLERMAN ET-AL 2,333,795

DEMONSTRATION KIT FOR MECHANICAL DENTISTRY Filed Dec. 25, 1941 2 Sheets-Sheet L2 INVENTORS EPA 57 A'ZZEPMA/V MAX 0. DU/(45 "wot-mechanicaldentistry: l a

' se articulatedrdefates"or=thelike* andf their 'relatid -*-tion are-realized;

Patented Nov. 9, 1943 1.1-:1-DElVI0NSTRA 'FIONKITtFDRMECHANICAL ,mEN'nsmmz i o p t i'N-Y- o Application-December 2s, a941, seria1-lNo.=424,1o2

claim. (crap-1 "While itiswell' known vices for denionstratin'gr the position Land: relation ready access to various tooth forms but must seek "-th'em oiit trom various 'p1aces. In iirder t'omiake atietit or schoo s, t t I 'kit-whereby:all iphases -6f *meohani'om uentistry may -be St 'fOr I disfil-ay anii eirarniriation. 1 l fl'he i'ntlel-itioh has' for a further ribject the pro- "being heldrposition-as by means of latch hooks flf hecbasei's preferably formed with aiplurality' oftraisedtcast portions such aslindicated at 113;,

-oftee'thboth naitutal artificial as they' are 5 and lfiy-itheilaitter of said'portions may-be ioca'tediin the human :mouthi; the dentist i 'ha'srit C providedgas shown'iap-articula'rly in Fig. :1; with a plurality -o f holes '.l='! in'simul-ation-of the tooth lanchoragesuin the f'human mouth. These holes 'emonstr'atl n tooth 'tru'cmay be each fitted with an artificial tooth struchism10*ture as exemplifieds in Figst 3-7. '&:For instance,

-m'anent bridge/thefteeth' l8 and I9 representing 'teeth inthe-mouth of the patient, the tooth-r irisieno a den tal demonstration kitiwlrereby var .l "representihg 'thez ar-tifi'cial tooth" to be :supplied,

ion's types or todth repair may be demonstrated as wenas ffixe'd or remo le bridge work.

' Bri'efiy', the inveri'tiorf niay be reali'zdt -r rovidinga compact kit for dentists and laboratories fin such pr'acticai form hat-"various teeth' and tooth -'res-t at-ions, sac

s ringes, mf' y be showmdr dexrionsf;rated. I l

accompanying-drawings, in an exemplary frnannrfa -preferrE1- forn1 -f -the inyention f and serveas thedoasisdf th ll specification in which the obie a 5 w illustrating the'cooperatiye n'shipbetween"demonstration-units used ata I h Figfi8 is a' side view*ofa su ott ba'se for kit as seenjromtheleft otFig. 1.

Fig. *Qfis a frag-me "t 'alry cross-sectional view through thebase showing a seat for one of the kit units. I

Fig. 10 is a fragmentary view (partly in section) of a tooth structure applied .to the lower part of the unit shown in Fig. 2. i l

Fig. 11 shows a fragmentary detail of tooth structure, showing its position and fixation in the cavity of one of the units of Fig. 2.

Referring to the drawings in greater detail, the

aperspctiye views t described the other portions of the kit will b61581 c as 'shown at 22, on either'si'de thereeception of "sets of artificial teeth ma also be proi idedwitli iasps starlets:

The plate mounted on the raised portion I5 I may alsobe for the upper part of the mouth and a may be designed in a somewhatdifferent manner acrylicresin bridging portion; may have a me various parts of the demonstration kit are sup- ,so. tallic bridging port on b S r to t shown ported as upon a base I0, said base being preferably cast or moulded either in metal or in any of the plastic compositions, The base may be formed with a peripheral step I] which serves at 32, but having contact with'the palate of the mouth. The kit may include a pair of simulated mouth portions arranged for articulation whereby the for a cover (not shown) for said kit, said cover bite of a pat e t m y be demonstrated: In hi law that a clearer-understanding of the'rel'a- I sew-portion l' may be formed witha shownfat n -and 2'4, which form part -of'a partial Y J 1 ate' adh'pted for use in the' upperpartof gthe monstratiomw disclosure, these two portions as related to each I other, will be termed an articulator.

One of the mentioned'portions designated 35 may be designed to simulate the'upper jaw and the other 36, the lower jaw. The upper jaw member may be provided with a rearward extension 31 carrying a pivot 38 for a pivotal lug '39 formed with a seat 49, "I-he member 36 may be formedwith a rearward extension 4| having upwardly directed post means 42 designed to be arranged in the seat 40. vided to interconnect the portions 39 and 4| whereby the jaw portions 35 and 36 'afearran'ged; I As best seen in Fig 2, the jaw portions are arranged so that 7 one may be moved with respect to the other to in proper relation to each other.

illustrate and demonstrate the bite of a patient.

A pintle 43 may be pro-.

As shown in Fig. 4, in addition to demonstrat-. ing a permanent bridge, the dentistmay demonstrate a crowned tooth, said tooth being shown at 5| in Fig. 1 and Fig, 4. This latter z'trtiflcial tooth may replace the tooth shown at 52 in-one of the articulated members. t I

It is unnecessary to detail and exhaust all of available-in inechanic'zal dentistryg, Figs. 5, 6, and

Each of the jaw portions-35an d-36 are provided I? with a plurality of tooth seats 44, similartmtheholes I! in the raised portion I6 and each receputive'of a tooth; said tooth beingeither' insimulation of a natural or an artificial tooth.

l -The base l0 maybe formed with seats 45jand 46grespective1yforthe positioning uponi'said base ofi'the jaw'portions35 and 3B. "The latter s'eat 45 is shown in Fig;9,'the sloping portion 41=of said seat serving to accommodate the part 39,

"and the: remainderfof' said seat, the jawrportion In addition to the partsdescribei-thekit, es-

pecially the base' thereoflmay be'provided' with a pluralityof article-receiving pockets-48 and a receptacle ,4!) for a similar purpose arranged -I1pon'ithe'raised portion I6:- Fig.- ljillustrates atifiilcertain metal parts such as inlays, amalg'alms, etc;, resting in the receptacle 49.

Thekitias-above described-is arranged; to have all of its tooth structures whether single or plural I interchangeably "fitted into the articulator jaw parts 35 andt36. As an example of what may be accomplished; should the teeth; of the patient,

, as represented by thetooth 50a, be necessary-to berreplacedartificially; the dentistimightjdecide upon constructing the permanent bridgej'such as shown in Fig; 3,; In order to demonstrate to the patientethe appearance, value and efliciency 7 reveal certain examples thereof as related to single teeth. It may be evident, however, that I by means of the kit herein disclosed and by means (if-suitable transposition of the teeth therein, a"

- dentist may easily, quickly and effectively demonstrate, both to himself and to his patient, the type o f dentistry to be performed. v

It'is to be noted that the novel kit is so (3011- p structed asto allow, by very simple means, also exact and true location and-angular position of the teeth in the kit with respect to each other.

-Thisis' particularly-true of the single teeth' inl'the movable base parts (articulatorwparts35,136); :as

' .well .as'in the fixed base partsgsuch as It;

location and angular position ofthegteeth may thus-:b'e made to .accord with-thenaturaland individual position of teeth in the -mouth of, the 1 I (patient; 2:: My I, ,7 k

-" "To;.this"end,- each cavity- 44; is 1relatively wide enough, toJ'permita certain i playgbetweemit Land :"a' tooth toabeiremovably;seated;.;therein; -;Qn-- the bottom ofreachcavity there -isprovided apiecepf wax, or similar plastic mass 244a whichadheresto memberhavingseatsjor artificial teeth; an,,up+ P iawm atin em -ha m s ats s m la i to those of said lower jaw member, meansongsaid .-memb ers adaptingthem for interconnectedgarticulation, ,and; artificial teeth in the ;mentioned appear and will Joe-seated in the mouth ofthe pa t-a 1 Any of the plates mounted on-the raised portions I3, 14, and 7 l5 may be similarly-interchangeably, arranged inrespective articulator v parts after "certain teeth have been removed from h art e iparts 35,,a'hd35t11' seats and-removable-for replacement bygth ra n d exam es t mec a n s y the point or extremity 44b of ,thegtooth set into said 1 cavity and thus holds said tooth'in ,any preferred conditionsandalso inits angular'position $3.5 indicated by dot-dash lines in Fi .11,- S aid' tooth ma b c nve iently p aqqdr r; hand; i

saidcavity and pressed against; said waxpiece contemplated scope of theinvention may; w'ell hen-made by sk l rs nsrw iho i e r e m from the spirit andxscopeofthefollowing;claim.

r iris claimed as'new and desiredto secure by Letters -lE atent, is; a r

A dental demonstration kit oolllprlslng'a base,

a plurality of raised portions;on,said lbase, exam ,plesof mechanical dentistry rem vably mounted on said r raised portions, a owe aw; simulating ..I sERNrisr, 1 imaxoapnxss While tner-fli y ntiongnas a athema respect rto the; particular. --form .;i llustrated ,;jlt should be apparent that j variations; within the 

